Obama tries to close deal, McCain vows to fight on

NATIONAL POLLS VARY A LOT

Although national polls continue to show Obama leading McCain, the size of Obama's lead, however, continues to vary widely in different surveys.

That's why McCain says the race is still close and the polls are inaccurate.

A Pew Research poll of 1,198 likely voters taken Oct. 23-26 shows Obama leading 53 to 38 percent.

The Gallup daily presidential tracking poll of 2,781 registered voters taken Oct. 25-27 has two likely voter models.

One model based on past voting behavior and current intention to vote shows Obama leading McCain 49 to 47 percent.

The second model based on current intention to vote shows Obama up 51 to 44 percent.

The Zogby daily presidential tracking poll of 1,203 likely voters taken Oct. 26-28 shows Obama leading by 5 percentage points.

The Rasmussen Reports daily presidential tracking poll for Oct.27 shows Obama leading McCain 51 to 46 percent.

The ABC News/Washington Post daily presidential tracking poll of 1,301 likely voters taken Oct. 24-27 shows Obama leading McCain 52 to 45 percent.

VOTERS PREFER OBAMA ON TAXES

The Wall Street Journal reports Republicans are losing ground in the battle over taxes -- turf they have dominated since the Reagan administration,

The latest Wall Street Journal/NBC News poll showed voters preferred Obama to McCain on taxes by 14 percentage points.

Obama will focus on the economy and how his tax plans would help the middle class in a half-hour political TV ad to be shown on major U.S. media networks.

The ad, called "Infomercial," will be broadcast on NBC, CBS, Fox, Univision, BET, MSNBC and TV One.

Editor:Zhang Pengfei